[PATCH 1/2] arm64: dts: xilinx: drop bias-high-impedance on SDIO CD/WP pins
Michal Simek
michal.simek at amd.com
Mon Jun 29 01:33:32 PDT 2026
On 6/3/26 16:19, Michal Simek wrote:
> Since commit 9c105255108b ("pinctrl: pinconf-generic: perform basic
> checks on pincfg properties"), the generic pinconf parser logs an error
> when a pin configuration node specifies more than one bias mode.
> Several ZynqMP boards described SDIO card-detect and write-protect pins
> with both bias-high-impedance and bias-pull-up, which triggers at
> pinctrl probe:
>
> generic pinconfig core: /firmware/zynqmp-firmware/pinctrl/.../conf-cd:
> cannot have multiple bias configurations
>
> On ZynqMP, bias-high-impedance enables tri-state while bias-pull-up
> enables the internal pull resistor; these are mutually exclusive bias
> settings and only pull-up is needed for CD/WP inputs. Drop the redundant
> bias-high-impedance property and keep bias-pull-up.
>
> Reported-by: Mikko Rapeli (Linaro) <mikko.rapeli at linaro.org>
> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=221586
> Signed-off-by: Michal Simek <michal.simek at amd.com>
> ---
>
> arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso | 1 -
> arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso | 1 -
> arch/arm64/boot/dts/xilinx/zynqmp-zc1751-xm015-dc1.dts | 4 ----
> arch/arm64/boot/dts/xilinx/zynqmp-zc1751-xm019-dc5.dts | 2 --
> arch/arm64/boot/dts/xilinx/zynqmp-zcu100-revC.dts | 1 -
> arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revA.dts | 2 --
> arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revA.dts | 1 -
> arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revC.dts | 1 -
> arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts | 2 --
> arch/arm64/boot/dts/xilinx/zynqmp-zcu111-revA.dts | 1 -
> 10 files changed, 16 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso b/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso
> index 923a70d750bf..44834bf1c19c 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso
> @@ -374,7 +374,6 @@ conf {
>
> conf-cd {
> groups = "sdio1_cd_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso b/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso
> index 563e750b0e08..49732de5fa4b 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso
> @@ -365,7 +365,6 @@ conf {
>
> conf-cd {
> groups = "sdio1_cd_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zc1751-xm015-dc1.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zc1751-xm015-dc1.dts
> index 6aff22d43361..f57987dad50f 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-zc1751-xm015-dc1.dts
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-zc1751-xm015-dc1.dts
> @@ -270,7 +270,6 @@ mux-cd {
>
> conf-cd {
> groups = "sdio0_cd_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> @@ -283,7 +282,6 @@ mux-wp {
>
> conf-wp {
> groups = "sdio0_wp_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> @@ -310,7 +308,6 @@ mux-cd {
>
> conf-cd {
> groups = "sdio1_cd_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> @@ -323,7 +320,6 @@ mux-wp {
>
> conf-wp {
> groups = "sdio1_wp_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zc1751-xm019-dc5.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zc1751-xm019-dc5.dts
> index 53aa3dca1dca..737d445dc16b 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-zc1751-xm019-dc5.dts
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-zc1751-xm019-dc5.dts
> @@ -270,7 +270,6 @@ mux-cd {
>
> conf-cd {
> groups = "sdio0_cd_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> @@ -283,7 +282,6 @@ mux-wp {
>
> conf-wp {
> groups = "sdio0_wp_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu100-revC.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu100-revC.dts
> index 4ec8a400494e..41f312a82bb4 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu100-revC.dts
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu100-revC.dts
> @@ -320,7 +320,6 @@ mux-cd {
>
> conf-cd {
> groups = "sdio0_cd_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revA.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revA.dts
> index e172a30e7b21..a5bc521ab679 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revA.dts
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu102-revA.dts
> @@ -896,7 +896,6 @@ mux-cd {
>
> conf-cd {
> groups = "sdio1_cd_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> @@ -909,7 +908,6 @@ mux-wp {
>
> conf-wp {
> groups = "sdio1_wp_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revA.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revA.dts
> index fe8f151ed706..32509083e54f 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revA.dts
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revA.dts
> @@ -359,7 +359,6 @@ mux-cd {
>
> conf-cd {
> groups = "sdio1_cd_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revC.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revC.dts
> index 3ee8ab224722..96699be8430f 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revC.dts
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu104-revC.dts
> @@ -371,7 +371,6 @@ mux-cd {
>
> conf-cd {
> groups = "sdio1_cd_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts
> index 7f6c87d4d77e..52441e5c8739 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts
> @@ -895,7 +895,6 @@ mux-cd {
>
> conf-cd {
> groups = "sdio1_cd_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> @@ -908,7 +907,6 @@ mux-wp {
>
> conf-wp {
> groups = "sdio1_wp_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-zcu111-revA.dts b/arch/arm64/boot/dts/xilinx/zynqmp-zcu111-revA.dts
> index 428b5558fbba..b34e4c93d249 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-zcu111-revA.dts
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-zcu111-revA.dts
> @@ -750,7 +750,6 @@ mux-cd {
>
> conf-cd {
> groups = "sdio1_cd_0_grp";
> - bias-high-impedance;
> bias-pull-up;
> slew-rate = <SLEW_RATE_SLOW>;
> power-source = <IO_STANDARD_LVCMOS18>;
Applied.
M
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